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Fair Value Measurements, Derivative Instruments and Hedging Activities - Estimated Fair Values of Derivative Financial Instruments and Location on Consolidated Balance Sheets (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified |  |  | 1 Months Ended | 6 Months Ended |  |  | 6 Months Ended
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May 31, 2013 Net investment hedges | Nov. 30, 2012 Net investment hedges | Jul. 31, 2012 Cash Flow Hedging | Jun. 30, 2012 Cash Flow Hedging | May 31, 2013 Cash Flow Hedging Interest rate swaps | Nov. 30, 2012 Cash Flow Hedging Interest rate swaps | May 31, 2013 Fair Value Hedging Interest rate swaps | May 31, 2013 Fair Value Hedging Interest rate swaps US Dollar | May 31, 2013 Fair Value Hedging Interest rate swaps Sterling | May 31, 2013 Maturing in July 2017 Net investment hedges
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |
Foreign currency forwards designated as hedges of net investments in foreign operations for euro-denominated functional currency | $ 128 | $ 235 |  |  |  |  |  |  |  |
Maturity date of derivative instruments |  |  | 2015-02 | 2013-05 | 2022-02 |  |  | 2012-02 | 2012-06 |
Maturity Of Foreign Currency Derivatives Month And Year |  |  |  |  |  |  |  |  |  | 2017-07
Amount of interest rate swap agreements change, of EURIBOR-based floating rate debt to fixed rate debt, for euro interest rate swaps designated as cash flow hedges |  |  |  |  | 255 | 269 |  |  |  |
Amount of interest rate swap agreements change, of fixed rate debt to U.S. dollar LIBOR or GBP LIBOR-based floating rate debt, for both U.S. dollar and sterling interest rate swaps designated as fair value hedges |  |  |  |  |  |  | $ 500 |  |  |

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- Definition Fair value as of the balance sheet date of all interest rate derivative assets designated as cash flow hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 17 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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